Issues with date and time sorting

Hi everyone, I was creating the schedule of an event I have to organize.

I started creating a table to make it easy to see simultaneous activities but I can’t figure out why the Time sorting is not working as expected. You will see that no matter if I sort ascending or descending the Time Column, it is not properly sorted.

The table is grouped horizontally by Column Fecha (Date in Spanish) and Hora (Time), and Vertically by Rooms.

Here is the doc:

Any ideas? Thanks!

Unfortunately I cannot change your doc - what happens if you ungroup the Hora column, and then sort?